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perf report: Add --percentage option

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The --percentage option is for controlling overhead percentage
displayed.  It can only receive either of "relative" or "absolute".

"relative" means it's relative to filtered entries only so that the
sum of shown entries will be always 100%.  "absolute" means it retains
the original value before and after the filter is applied.

  $ perf report -s comm
  # Overhead       Command
  # ........  ............
  #
      74.19%           cc1
       7.61%           gcc
       6.11%            as
       4.35%            sh
       4.14%          make
       1.13%        fixdep
  ...

  $ perf report -s comm -c cc1,gcc --percentage absolute
  # Overhead       Command
  # ........  ............
  #
      74.19%           cc1
       7.61%           gcc

  $ perf report -s comm -c cc1,gcc --percentage relative
  # Overhead       Command
  # ........  ............
  #
      90.69%           cc1
       9.31%           gcc

Note that it has zero effect if no filter was applied.

Suggested-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1397145720-8063-3-git-send-email-namhyung@kernel.org
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
This commit is contained in:
Namhyung Kim 2014-01-14 11:52:48 +09:00 committed by Jiri Olsa
parent 1ab1fa5dfb
commit f214833054
9 changed files with 106 additions and 46 deletions
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24
tools/perf/Documentation/perf-report.txt
View File

@ -25,10 +25,6 @@ OPTIONS
--verbose::
Be more verbose. (show symbol address, etc)
-d::
--dsos=::
Only consider symbols in these dsos. CSV that understands
file://filename entries.
-n::
--show-nr-samples::
Show the number of samples for each symbol
@ -42,11 +38,18 @@ OPTIONS
-c::
--comms=::
Only consider symbols in these comms. CSV that understands
file://filename entries.
file://filename entries. This option will affect the percentage of
the overhead column. See --percentage for more info.
-d::
--dsos=::
Only consider symbols in these dsos. CSV that understands
file://filename entries. This option will affect the percentage of
the overhead column. See --percentage for more info.
-S::
--symbols=::
Only consider these symbols. CSV that understands
file://filename entries.
file://filename entries. This option will affect the percentage of
the overhead column. See --percentage for more info.
--symbol-filter=::
Only show symbols that match (partially) with this filter.
@ -237,6 +240,15 @@ OPTIONS
Do not show entries which have an overhead under that percent.
(Default: 0).
--percentage::
Determine how to display the overhead percentage of filtered entries.
Filters can be applied by --comms, --dsos and/or --symbols options and
Zoom operations on the TUI (thread, dso, etc).
"relative" means it's relative to filtered entries only so that the
sum of shown entries will be always 100%. "absolute" means it retains
the original value before and after the filter is applied.
--header::
Show header information in the perf.data file. This includes
various information like hostname, OS and perf version, cpu/mem

30
tools/perf/builtin-report.c
View File

@ -343,6 +343,11 @@ static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report
char buf[512];
size_t size = sizeof(buf);
if (symbol_conf.filter_relative) {
nr_samples = hists->stats.nr_non_filtered_samples;
nr_events = hists->stats.total_non_filtered_period;
}
if (perf_evsel__is_group_event(evsel)) {
struct perf_evsel *pos;
@ -350,8 +355,13 @@ static size_t hists__fprintf_nr_sample_events(struct hists *hists, struct report
evname = buf;
for_each_group_member(pos, evsel) {
nr_samples += pos->hists.stats.nr_events[PERF_RECORD_SAMPLE];
nr_events += pos->hists.stats.total_period;
if (symbol_conf.filter_relative) {
nr_samples += pos->hists.stats.nr_non_filtered_samples;
nr_events += pos->hists.stats.total_non_filtered_period;
} else {
nr_samples += pos->hists.stats.nr_events[PERF_RECORD_SAMPLE];
nr_events += pos->hists.stats.total_period;
}
}
}
@ -707,6 +717,20 @@ parse_percent_limit(const struct option *opt, const char *str,
return 0;
}
static int
parse_percentage(const struct option *opt __maybe_unused, const char *str,
int unset __maybe_unused)
{
if (!strcmp(str, "relative"))
symbol_conf.filter_relative = true;
else if (!strcmp(str, "absolute"))
symbol_conf.filter_relative = false;
else
return -1;
return 0;
}
int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
{
struct perf_session *session;
@ -829,6 +853,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
OPT_BOOLEAN(0, "mem-mode", &report.mem_mode, "mem access profile"),
OPT_CALLBACK(0, "percent-limit", &report, "percent",
"Don't show entries under that percent", parse_percent_limit),
OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
"how to display percentage of filtered entries", parse_percentage),
OPT_END()
};
struct perf_data_file file = {

35
tools/perf/ui/browsers/hists.c
View File

@ -769,12 +769,15 @@ static unsigned int hist_browser__refresh(struct ui_browser *browser)
for (nd = browser->top; nd; nd = rb_next(nd)) {
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
float percent = h->stat.period * 100.0 /
hb->hists->stats.total_period;
u64 total = hists__total_period(h->hists);
float percent = 0.0;
if (h->filtered)
continue;
if (total)
percent = h->stat.period * 100.0 / total;
if (percent < hb->min_pcnt)
continue;
@ -792,8 +795,11 @@ static struct rb_node *hists__filter_entries(struct rb_node *nd,
{
while (nd != NULL) {
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
float percent = h->stat.period * 100.0 /
hists->stats.total_period;
u64 total = hists__total_period(hists);
float percent = 0.0;
if (total)
percent = h->stat.period * 100.0 / total;
if (percent < min_pcnt)
return NULL;
@ -813,8 +819,11 @@ static struct rb_node *hists__filter_prev_entries(struct rb_node *nd,
{
while (nd != NULL) {
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
float percent = h->stat.period * 100.0 /
hists->stats.total_period;
u64 total = hists__total_period(hists);
float percent = 0.0;
if (total)
percent = h->stat.period * 100.0 / total;
if (!h->filtered && percent >= min_pcnt)
return nd;
@ -1189,6 +1198,11 @@ static int hists__browser_title(struct hists *hists, char *bf, size_t size,
char buf[512];
size_t buflen = sizeof(buf);
if (symbol_conf.filter_relative) {
nr_samples = hists->stats.nr_non_filtered_samples;
nr_events = hists->stats.total_non_filtered_period;
}
if (perf_evsel__is_group_event(evsel)) {
struct perf_evsel *pos;
@ -1196,8 +1210,13 @@ static int hists__browser_title(struct hists *hists, char *bf, size_t size,
ev_name = buf;
for_each_group_member(pos, evsel) {
nr_samples += pos->hists.stats.nr_events[PERF_RECORD_SAMPLE];
nr_events += pos->hists.stats.total_period;
if (symbol_conf.filter_relative) {
nr_samples += pos->hists.stats.nr_non_filtered_samples;
nr_events += pos->hists.stats.total_non_filtered_period;
} else {
nr_samples += pos->hists.stats.nr_events[PERF_RECORD_SAMPLE];
nr_events += pos->hists.stats.total_period;
}
}
}

11
tools/perf/ui/gtk/hists.c
View File

@ -228,12 +228,15 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists,
for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
GtkTreeIter iter;
float percent = h->stat.period * 100.0 /
hists->stats.total_period;
u64 total = hists__total_period(h->hists);
float percent = 0.0;
if (h->filtered)
continue;
if (total)
percent = h->stat.period * 100.0 / total;
if (percent < min_pcnt)
continue;
@ -261,12 +264,8 @@ static void perf_gtk__show_hists(GtkWidget *window, struct hists *hists,
}
if (symbol_conf.use_callchain && sort__has_sym) {
u64 total;
if (callchain_param.mode == CHAIN_GRAPH_REL)
total = h->stat.period;
else
total = hists->stats.total_period;
perf_gtk__add_callchain(&h->sorted_chain, store, &iter,
sym_col, total);

8
tools/perf/ui/hist.c
View File

@ -32,10 +32,10 @@ int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
if (fmt_percent) {
double percent = 0.0;
u64 total = hists__total_period(hists);
if (hists->stats.total_period)
percent = 100.0 * get_field(he) /
hists->stats.total_period;
if (total)
percent = 100.0 * get_field(he) / total;
ret += hpp__call_print_fn(hpp, print_fn, fmt, percent);
} else
@ -50,7 +50,7 @@ int __hpp__fmt(struct perf_hpp *hpp, struct hist_entry *he,
list_for_each_entry(pair, &he->pairs.head, pairs.node) {
u64 period = get_field(pair);
u64 total = pair->hists->stats.total_period;
u64 total = hists__total_period(pair->hists);
if (!total)
continue;

39
tools/perf/util/hist.c
View File

@ -321,9 +321,11 @@ void hists__inc_nr_entries(struct hists *hists, struct hist_entry *h)
{
if (!h->filtered) {
hists__calc_col_len(hists, h);
++hists->nr_entries;
hists->stats.total_period += h->stat.period;
hists->nr_non_filtered_entries++;
hists->stats.total_non_filtered_period += h->stat.period;
}
hists->nr_entries++;
hists->stats.total_period += h->stat.period;
}
static u8 symbol__parent_filter(const struct symbol *parent)
@ -674,8 +676,9 @@ void hists__output_resort(struct hists *hists)
next = rb_first(root);
hists->entries = RB_ROOT;
hists->nr_entries = hists->nr_non_filtered_entries = 0;
hists->stats.total_period = hists->stats.total_non_filtered_period = 0;
hists->nr_non_filtered_entries = 0;
hists->stats.total_period = 0;
hists->stats.total_non_filtered_period = 0;
hists__reset_col_len(hists);
while (next) {
@ -694,16 +697,11 @@ static void hists__remove_entry_filter(struct hists *hists, struct hist_entry *h
if (h->filtered)
return;
++hists->nr_entries;
++hists->nr_non_filtered_entries;
if (h->ms.unfolded) {
hists->nr_entries += h->nr_rows;
if (h->ms.unfolded)
hists->nr_non_filtered_entries += h->nr_rows;
}
h->row_offset = 0;
hists->stats.total_period += h->stat.period;
hists->stats.total_non_filtered_period += h->stat.period;
hists->stats.nr_events[PERF_RECORD_SAMPLE] += h->stat.nr_events;
hists->stats.nr_non_filtered_samples += h->stat.nr_events;
hists__calc_col_len(hists, h);
@ -726,9 +724,8 @@ void hists__filter_by_dso(struct hists *hists)
{
struct rb_node *nd;
hists->nr_entries = hists->stats.total_period = 0;
hists->nr_non_filtered_entries = hists->stats.total_non_filtered_period = 0;
hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
hists->nr_non_filtered_entries = 0;
hists->stats.total_non_filtered_period = 0;
hists->stats.nr_non_filtered_samples = 0;
hists__reset_col_len(hists);
@ -761,9 +758,8 @@ void hists__filter_by_thread(struct hists *hists)
{
struct rb_node *nd;
hists->nr_entries = hists->stats.total_period = 0;
hists->nr_non_filtered_entries = hists->stats.total_non_filtered_period = 0;
hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
hists->nr_non_filtered_entries = 0;
hists->stats.total_non_filtered_period = 0;
hists->stats.nr_non_filtered_samples = 0;
hists__reset_col_len(hists);
@ -794,9 +790,8 @@ void hists__filter_by_symbol(struct hists *hists)
{
struct rb_node *nd;
hists->nr_entries = hists->stats.total_period = 0;
hists->nr_non_filtered_entries = hists->stats.total_non_filtered_period = 0;
hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
hists->nr_non_filtered_entries = 0;
hists->stats.total_non_filtered_period = 0;
hists->stats.nr_non_filtered_samples = 0;
hists__reset_col_len(hists);
@ -942,3 +937,9 @@ int hists__link(struct hists *leader, struct hists *other)
return 0;
}
u64 hists__total_period(struct hists *hists)
{
return symbol_conf.filter_relative ? hists->stats.total_non_filtered_period :
hists->stats.total_period;
}

1
tools/perf/util/hist.h
View File

@ -115,6 +115,7 @@ void hists__collapse_resort(struct hists *hists, struct ui_progress *prog);
void hists__decay_entries(struct hists *hists, bool zap_user, bool zap_kernel);
void hists__output_recalc_col_len(struct hists *hists, int max_rows);
u64 hists__total_period(struct hists *hists);
void hists__inc_nr_entries(struct hists *hists, struct hist_entry *h);
void hists__inc_nr_events(struct hists *hists, u32 type);
void events_stats__inc(struct events_stats *stats, u32 type);

1
tools/perf/util/symbol.c
View File

@ -33,6 +33,7 @@ struct symbol_conf symbol_conf = {
.try_vmlinux_path = true,
.annotate_src = true,
.demangle = true,
.filter_relative = true,
.symfs = "",
};

3
tools/perf/util/symbol.h
View File

@ -115,7 +115,8 @@ struct symbol_conf {
annotate_asm_raw,
annotate_src,
event_group,
demangle;
demangle,
filter_relative;
const char *vmlinux_name,
*kallsyms_name,
*source_prefix,